Dokokin Kepler suna nuni ne da dokoki guda uku na motsin duniyar da masanin falaki Johannes Kepler na Jamus ya tsara a farkon karni na 17. Waɗannan dokokin sun bayyana motsin taurari a kewayen Rana:Dokar farko, wadda aka fi sani da ka'idar kewayawa, ta bayyana cewa taurari suna tafiya a cikin kewayawa da Rana a daya daga cikin foci of the ellipse. Doka ta biyu, wadda kuma aka fi sani da ka'idar yankunan, ta bayyana cewa layin da aka zana daga duniyar duniyar zuwa Rana yana fitar da yanki daidai-da-wane a cikin tsaka-tsaki daidai-da-wane. lokaci. Doka ta uku, wadda kuma aka fi sani da ka'idar jituwa, ta bayyana cewa murabba'in lokacin da duniya ke kewayawa ya yi daidai da cube na babban axis. na kewayenta. /p>